What's up with with Cook wanting to buy #89 from Amari Cooper??Great way to fit in and make friends!

Depends on what Mr. Amari thinks of his legacy. If he thinks he's well on his way to creating it - he may not be amenable to switching numbers. If he thinks it's still in front of him to be created - he might not care about switching numbers. Especially since he'd be heading into that future weighted down with some extra pocket change.